Description:These days when events occur in the world, they also occur on Twitter. That was certainly the case Monday as news of the devastating Boston Marathon bombings broke, and the microblogging service was flooded with information about them. On stage at D: Dive Into Mobile Tuesday afternoon, Twitter's VP of product Michael Sippey talked about the spike in Boston-related tweets following the tragedy and how Twitter's community parses good information from bad.(2:46)